The testing times for a group of college students were normally distributed with a mean of u :31 minutesand a standard deviation of o = 4.8 minutes.The bell curve below represents the distribution for testing times. The scale on the horizontal axis is equalto the standard deviation.Fill in the indicated boxes.H = 314.8O =H-30 u-20 u - oμ+ 20 μ+3σUsed the Empirical Rule to complete the following statements:68% of testing times were betweenminutes andminutes.95% of testing times were betweenminutes andutes.99.7% of testing times were betweenminutes andminutes.50% of testing times were belowminutes.

Given that , μ=31 and σ=4.8 By using the Empirical Rule , 1) 68% of the observation lies within…

The testing times for a group of college students were normally distributed with a mean of u = 31 minutes and a standard deviation of o = 4.8 minutes. The bell curve below represents the distribution for testing times. The scale on the horizontal axis is equal to the standard deviation. Fill in the indicated boxes. µ = 31 o = 4.8 H-30 u-20 u-o μ+20 μ+3σ Used the Empirical Rule to complete the following statements: 68% of testing times were between minutes and minutes. 95% of testing times were between minutes and minutes. 99.7% of testing times were between minutes and minutes. 50% of testing times were below minutes.

The testing times for a group of college students were normally distributed with a mean of u = 31 minutes and a standard deviation of o = 4.8 minutes. The bell curve below represents the distribution for testing times. The scale on the horizontal axis is equal to the standard deviation. Fill in the indicated boxes. µ = 31 o = 4.8 H-30 u-20 u-o μ+20 μ+3σ Used the Empirical Rule to complete the following statements: 68% of testing times were between minutes and minutes. 95% of testing times were between minutes and minutes. 99.7% of testing times were between minutes and minutes. 50% of testing times were below minutes.

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

See similar textbooks

Similar questions

Convert the following equation to subscript notation and identify the Dependent, Independent Variable, the order, degree, linearity and type of the DE. Show your solution if necessary. 2 Txx + (Tyy)? + Tz = 0 XX
Refer to the following normal curve, with mean µ and standard deviation o. The standard deviation o= Select one: a. 6 b. 24 3 d. 12 C. e. none of these 16% of total area 44 56 16% of total area
Find the areas for the following z values. Use standard normal table. Provide your answers to four decimal places (4 dp.) Area to the left of z=0.00 - Area to the left of z=2.33 - Using your calculator in STAT MODE, find the mean and standard deviation of the following sample for the variable age (Round to 3 dp). 18 18 20 20 23 25 29 35 Mean : Standard Deviation :
You are given that X follows a Weibull distribution where alpha = 2.3 beta = 17.4 What is the value of the the 60th percentile of this distribution?
step by step please
The time to complete an exam is approximately Normal with a mean μ = 47 minutes and a standard deviation o = 8 minutes. The bell curve below represents the distribution for testing times. The scale on the horizontal axis is equal to the standard deviation. 1. Fill in the indicated boxes. μ-3σ μ-2ο μίσ + μ μ+o 47 minutes. 2. Used the Empirical Rule to complete the following statements: 95% of testing times were between and μ = 47 σ = 8 μ+20 μ+30 minutes and 55 minutes. minutes % of the testing times were between 39
Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 7.5 parts/million (ppm). A researcher believes that the current ozone level is at an excess level. The mean of 66 samples is 7.7 ppm with a standard deviation of 1.0 Does the data support the claim at the 0.025 level? Assume the population distribution is approximately normal. Step 2 of 5 : Find the value of the test statistic. Round your answer to three decimal places. Specify if the test is one-tailed or two-tailed. Determine the decision rule for rejecting the null hypothesis. Round your answer to three decimal places. Make the decision to reject or fail to reject the null hypothesis.
If you chose the α level of .01, then which of the following p value will allow you to conclude that your result is statistically significant? a. 0.005 b. 0.05 c. 0.10 d. 0.03
A population data set with a normal distribution has a mean u = 4 and a standard deviation o = 1.1. Find the approximate proportion of observations in the data set that lie below 5.1? O 0.84 0.17 O 0.34 0.68
The data given below are the weights for a sample of babies. Assume the population of birth weights is normally distributed with a mean of μ= 7.10 DATA: 6.88 6.00 8.19 7.44 7.06 5.06 8.38 7.44 8.31 6.38 What is the mean weight in our sample? What is the standard deviation of our sample? What is the z-score for the heaviest baby in the sample? Give both the X-value and the z-score. What is the z-score for the lightest baby in the sample? Give both the X-value and the z-score. Assuming the distribution of birth weights is normally distributed, what percent of the babies in this distribution weigh more than our heaviest baby?
For a population with mean 90 and standard deviation 10 A. find the percentile rank for a score of 95 B. Find the cutoff score (for the population with mean 90, not the z score) for top 2% C. Find the cutoff score (for the population with mean 90, not the z score) for the lowest 20 %